<template>
  <div class="update-photo">
    <img :src="image" class="img" ref="image">
    <van-nav-bar
      class="toolbar"
      left-text="取消"
      right-text="确认"
      @click-left="$emit('close')"
      @click-right="onConfirm"
    />
  </div>
</template>

<script>
import 'cropperjs/dist/cropper.css'
import Cropper from 'cropperjs'
import { updateUserPhoto } from '@/api/user'
export default {
  name: 'UpdatePhoto',
  components: {},
  props: {
    file: {
      // type: Object,
      required: true
    }
  },
  data () {
    return {
      image: window.URL.createObjectURL(this.file),
      cropper: null
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {
    const image = this.$refs.image
    this.cropper = new Cropper(image, {
      viewMode: 1,
      dragMode: 'move',
      aspectRatio: 1,
      cropBoxMovable: false,
      cropBoxResizable: false,
      background: false,
      movable: true
    })
  },
  methods: {
    getCroppedCanvas () {
      return new Promise(resolve => {
        this.cropper.getCroppedCanvas().toBlob((blob) => {
          resolve(blob)
        })
      })
    },
    async onConfirm () {
      this.$toast.loading({
        message: '保存中',
        forbidClick: true,
        duration: 0
      })
      const file = await this.getCroppedCanvas()
      const fd = new FormData()
      fd.append('photo', file)
      // fd.append('photo', this.file)
      await updateUserPhoto(fd)
      this.$toast.success('保存成功')
      this.$emit('close')
      this.$emit('update-photo', window.URL.createObjectURL(file))
    }
  }
}
</script>

<style lang="less" scoped>
img {
  display: block;

  /* This rule is very important, please don't ignore this */
  max-width: 100%;
}
.toolbar{
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #000;
}
</style>
